Bonsoir, voici le message que je reçois sur un portable sous Debian 9
sudo add-apt-repository ppa:vincent-vandevyvre/vvv
[sudo] Mot de passe de lilit51 :
More info: https://launchpad.net/~vincent-vandevyvre/+archive/ubuntu/vvv
Press [ENTER] to continue or ctrl-c to cancel adding it
gpg: keybox '/tmp/tmpmwrk531h/pubring.gpg' created
gpg: /tmp/tmpmwrk531h/trustdb.gpg: trustdb created
gpg: key A5ADEEFF89F92A1A: public key "Launchpad PPA for VinsS" imported
gpg: Total number processed: 1
gpg: imported: 1
gpg: no valid OpenPGP data found.